Seth wheeler and edgae jerome



@with tursutrat ffice.

SETE WHEELER AND EDGAR JEROME, 0F ALBANY, NEW YORK.

f Laan Patent No. 66,919, am.; Juzg 16,1867.

IMPROVEMENT IN PINISHING BOXES, 6to., OP PULP.

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TO ALL WHOM IT MAY CONCERN:

Be it known that we, SETI! WHEELER and EDGAR JEROME, of Albany, in the State of New York, have invented a new and useful Mode of Pressing Hollow Articles made direct from Paper-Pulp or other analogous' substance; and we do hereby declare that the following is a full, clear, and exact description of the saine, reference being had to the accompanying drawings, forming part of this specification, in which- Figure 1 is a horizontal section just below the pressing-follower.

v:Figure 2 is a vertical central section, and

Figures, a similar section, but taken at right angles to the section shown in iig. 2.

Figure 4is a detached view in section of the perforated rigid frame upon which the box or hollow article is pressed. v

Figure 5 is a section of the perforated frauie with a box framed on it but not pressed.-

Figure 6 is a section similar to iig. 5, the box pressed or finished.

Figure 7 shows a section of the box detached and finished; that is, the body of the box.

Similar letters of reference in th'eeseveraligures indicate correspondingparts.

One of the features of inventionwhichis the subject of this patent is a rigid perforated frame corresponding to the form of the hollow article required to be made, suchframe being triade removable from the die and adapted for use in connection with a male and a pressing female die of such construction that the paper-pulp article formed on the frame may be pressed smooth on its inner or outer surfaces, and the moisture expressed from thc pulp allowed a free chance to pass off. And another feature of invention which forms the subject of this patent is sustaining the article upon a removable rigid frame upon or within which it is formed during the operation of pressing or smoothing its surfaces by a mechanical process. A l

To enable others skilled-in the art to make and use our invention, we will proceed to describeit with reference to the drawings.

A represents a truncated pyramidal die made hollow 4and with channels and perforatious on and through itsvtop and sides, as'represented. This die is applicable to a. suction or atmospheric machine working on the principle set forth in Edward H. Knights patent, dated April 3, 1866, for making hollow articles out of paperpulp. B is a. hollow perforated frame made of metal, hard rubber, or other rigid material. Its shape is an eiact counterpart of` that of the die. This frame is placed over the die so as to protect the channels and perfox-ations of the die-from being clogged. The pulp, when the exhausting apparatus is in actior., deposits thinly and evenly upon 'this'nely perforated frame, the channels and perforations allowing a free current of air through the machine, and also permitting a free escape of water from the pulp which is drawn upon the frame. Thedie may be removable `from the forming machine along withrthe permeable fra-me, or it may b fa fixture with said machine and a counterpart of it used in the pressing operation hereafter described. Tli'e/ rigid perf forated frame must` always be removable from both the forming-die and the atmospheric apparatus.

When the same die is used as the basis for pressing and forming the hollow article, it is taken away from the machine,together with the rigid frame and hollow pulp article, and placed upon the bed-plate of a screw-press and properly confined under a female pressing-die, G, as represented. This female die is in its form an exact counterpart of thomale die. The screwpress shown is constructed with a blank between two portions of a thread, so that time may be saved in raising and lowering'the female die. Any proper style of press may be adopted.V

In case'it is notldesirable to remove the forming-die along with the permeable rigid frame, a press, with a die just like the one shown in the drawing, is employed, and as soon as the rigid frame with the hollow article upon it is removed from the forming-die of the atmospheric apparatus, the frame with the hollow articlelupon it is placed upon the die of this frame'a-nd the female pressing-die is forced down upon the surface of the hollow article with suiicient force to impart a smooth-finished surface to it, and to express the water outof the pulp. The rigid frame is then lifted o' of the die and the hollow article upon the frame is set out to dry. When dry it is recieved from the rigid frame and said frame is used for another operation.

The top of the box is formed in the same manner as the body, the forming-dies and pressing-dies being only changed in form and character accordingly n .s circumstances require.

come 2 lhe pressing or smoothing and finishing process may be performed by rolling, rubbing` or in any known practical way of smoothing substances of the nature herein mentioned. v

As hollow articles may be made by the atmospheric. process of Knight, hereinbefore referred to, either upon the outer or inner surface of the permeable frame, we do not'limit our invention to finishing the hollow articles upon the outer surface. If thev articles are formed upon the inner surface of the permcableframe, a male pressing-die will have to be substituted for the female die, and the female die will take the position ofthe male die, and thus be a supporting wall to the permeable frame, such inverted female diev being constructed vwvitlr channels and passages for water to freely escape; and when used in the forming process will be constructed so as to allow a free suction of air through the machine.

Any desired form of article, or particularly such as are mentioned in Edward H. Knight's patent of April 3, 1866, may be pressed and finished by our invention herein described.

We will state here that in the manufact-ure of hollow articles' direct from paper-pulp, papier-mache, and other analogous substances, by the atmospheric process'and upon permeable surfaces, the product isl defective and unsubstantial, and the surfaces next the pulp mass in which the permeable surfaces are immersed are rough and uneven, as Well as unsightly, thus rendering it necessary nto submit the article to a finishing process. The delicate nature of the article in amoist state also renders it necessary that the sides thereof be supported during this finishing process and during the handling of the articles. Our permeable rigidframes meet all of these difculties and enable us to furnish directly from pulp, by the atmospheric process, merchantable hollow articles. In the manufacture of blau is, from which to make boxes and othervmany-sided ,hollow articles, a permeable rigid plate corresponding to the surface of the shaping-die is used as tho basis upon u'hich to press and finish the blank, such permeable plate being used upon the die.' and the paper-stock pressed into sha-peand finished upon it, instead of being finishedupon the die proper. l We regard thisas another of the many -ways o't' employing permeable. rigid platesor frames upon which to press and finish articles or prod-uctsvmade directly from paperpulpp. The making of blanksfor paper boxes and other many-sided hollow articles is not the subject-matter of this patent, but that of another patent of even datevivith this one. l

i'hatwre claim as our invention; and desire to secure by Letters Patent, isv Pressing or finishing the article upon' or Within a removable permeable rigid frame, such frame being the one upon or ivithin which the article is made.

Sustaining the hollow article by a permeable rigid frame during the-pressing or finishing process.

SETI-I WHEELER, EDGAR JEROME.

lvitnesses: J. H. BULLocK, M. V. B. WINNE. 

